With the rapid growth of the wireless mobile applications, wireless voice has begun to challenge wireline voice, whereas the desire to access e-mail, surf the Web or download music (e.g., MP3) wirelessly is increasing for wireless data. While second generation (2G) cellular wireless systems, such as cdmaOne1, GSM2 and TDMA3, introduced digital technology to wireless cellular systems to deal with the increasing demand for wireless applications, there is still the need for more spectrally efficient technologies for two reasons. First, wireless voice capacity is expected to continue to grow. Second, the introduction of high-speed wireless data will require more bandwidth.
标签： Wireless Systems Mobile Beyond and 3G
上传时间： 2020-05-30
上传用户：shancjb
The telecommunications industry has seen a rapid boost within the last decade. New realities and visions of functionalities in various telecommunications networks have brought forward the concept of next-generation networks (NGNs). The competitions among operators for support- ing various services, lowering of the cost of having mobile and cellular phones and smartphones, increasing demand for general mobility, explosion of digital traffic, and advent of convergence network technologies added more dynamism in the idea of NGNs. In fact, facilitating con- vergence of networks and convergence of various types of services is a significant objective of NGNs.
标签： Next-Generation Converged Networks
上传时间： 2020-05-31
上传用户：shancjb
The first practical examples of mobile communications were used in many countries like the USA, the UK and Germany in military services, and played a significant role in the First World War to transfer important information from the front to headquarters to take further actions. Good and secure wireless communications were an important need for all military services – army, navy and air force. In this respect, the Second World War was a big experimental battlefield for the development and evolution of mobile radio. It was in the interests of governments that after the Second World War the military investment should be paid back by civilian use, and all western European countries started their so-called first generation of mobile communication networks.
标签： Multimedia Business Mobile The
上传时间： 2020-06-01
上传用户：shancjb
This book addresses the issues on the development of next generation CDMA technologies and contains a lot of information on the subject from both the open literature and my own research activities in the last fifteen years.
标签： Technologies Generation Next CDMA The
上传时间： 2020-06-01
上传用户：shancjb
This book is written for engineers involved in the operation, control, and planning of electric power systems. In addition, the book provides information and tools for researchers working in the fields of power system security and stability. The book consists of two volumes. The first volume provides traditional techniques for the stability analysis of large scale power systems. In addition, an overview of the main drivers and requirements for modernization of the traditional methods for online applications are discussed. The second volume provides techniques for online security assessment and corrective action studies. In addition, the impact of variable generation on the security of power systems is considered in the second volume. The first volume may be considered as a background builder while the second volume is intended for the coverage of edge techniques and methods for online dynamic security studies.
上传时间： 2020-06-07
上传用户：shancjb
This edition of Digital Image Processing is a major revision of the book. As in the 1977 and 1987 editions by Gonzalez and Wintz, and the 1992, 2002, and 2008 editions by Gonzalez and Woods, this sixth-generation edition was prepared with students and instructors in mind. The principal objectives of the book continue to be to provide an introduction to basic concepts and methodologies applicable to digital image processing, and to develop a foundation that can be used as the basis for further study and research in this field. To achieve these objectives, we focused again on material that we believe is fundamental and whose scope of application is not limited to the solution of specialized problems. The mathematical complexity of the book remains at a level well within the grasp of college seniors and first-year graduate students who have introductory preparation in mathematical analysis, vectors, matrices, probability, statistics, linear systems, and computer programming. The book website provides tutorials to support readers needing a review of this background material
标签： Processing Digital Image
上传时间： 2021-02-20
上传用户：
Head.First.Python 中文版不只是一门python入门书，还会交给我们andriod手机，google app engine等创建应用程序。
标签： python
上传时间： 2022-06-27
上传用户：
PrefaceDuring the past years, there has been a quickly rising interest in radio access technologies for providingmobile as well as nomadic and fixed services for voice, video, and data. The difference indesign, implementation, and use between telecom and datacom technologies is also becoming moreblurred. One example is cellular technologies from the telecom world being used for broadband dataand wireless LAN from the datacom world being used for voice-over IP.Today, the most widespread radio access technology for mobile communication is digital cellular,with the number of users passing 5 billion by 2010, which is more than half of the world’s population.It has emerged from early deployments of an expensive voice service for a few car-borne users,to today’s widespread use of mobile-communication devices that provide a range of mobile servicesand often include camera, MP3 player, and PDA functions. With this widespread use and increasinginterest in mobile communication, a continuing evolution ahead is foreseen.This book describes LTE, developed in 3GPP (Third Generation Partnership Project) and providingtrue 4G broadband mobile access, starting from the first version in release 8 and through the continuingevolution to release 10, the latest version of LTE. Release 10, also known as LTE-Advanced,is of particular interest as it is the major technology approved by the ITU as fulfilling the IMTAdvancedrequirements. The description in this book is based on LTE release 10 and thus provides acomplete description of the LTE-Advanced radio access from the bottom up.Chapter 1 gives the background to LTE and its evolution, looking also at the different standardsbodies and organizations involved in the process of defining 4G. It also gives a discussion of the reasonsand driving forces behind the evolution.Chapters 2–6 provide a deeper insight into some of the technologies that are part of LTE and itsevolution. Because of its generic nature, these chapters can be used as a background not only for LTEas described in this book, but also for readers who want to understand the technology behind othersystems, such as WCDMA/HSPA, WiMAX, and CDMA2000.Chapters 7–17 constitute the main part of the book. As a start, an introductory technical overviewof LTE is given, where the most important technology components are introduced based onthe generic technologies described in previous chapters. The following chapters provide a detaileddescription of the protocol structure, the downlink and uplink transmission schemes, and the associatedmechanisms for scheduling, retransmission and interference handling. Broadcast operation andrelaying are also described. This is followed by a discussion of the spectrum flexibility and the associated
上传时间： 2022-07-08
上传用户：
VIP专区-嵌入式/单片机编程源码精选合集系列（104）资源包含以下内容：1. mips命令集详解.2. 数码相框原理图,ZXDP-010 (8302+720).3. CBM2090单片8BIT 16BIT共板原理图.4. 红外线遥控是目前使用最广泛的一种通信和遥控手段。由于红外线遥控装置具有体积小、功耗低、功能强、成本低等特点.5. 时间触发嵌入式系统设计模式 使用8051系列微控制器开发可靠应用.6. 关于555时基电路原理以及应用的介绍说明.7. 一个关于s3c2410_LCD_640*480的驱动程序.8. ipod——touch攻略.9. SDMMC 源码 SD、MMC卡的读写程序.10. 嵌入式试验开发平台简介.11. Mobile phone MMI design reference..12. 我写的stv2248 芯片的驱动程序.13. 应用于S60平台的示例程序.14. YAFFS (Yet Another Flash File System) is now in its second generation and provides a fast robust fil.15. 关于h264的演示 内容不错 希望大家喜欢..16. Michael Barr是Netrino公司的总裁兼创始人.17. 2006年软考的嵌入式系统设计师考试题及答案.18. S3C2440开发板原理图以及成品图片.是硬件开发工程师的好参考资料.19. 一个可以实现嵌入式视频监控系统的服务器软件。.20. 一个可以实现嵌入式视频监控系统的最新版客户端软件。.21. 东软嵌入式高级C培训(2007)).22. 最新的uffs,目前是1.1.2版本.23. NokiaSeries40Book1,介绍了40平台的手机开发.24. 数控编程开发事例,对数控机床的直线和圆户进行插补,.25. 用STR710控制串口及CC1100进行无线通信.26. 非常不错的单片机开发板原理图.27. s3c44b0bootloader分析.28. 以 DSpic30f4011为 SPI SLAVE的范例程式.29. 汉字与字符显示函数。对于任一主函数.30. 最详细最专业的MODBus协议介绍。 给MODBus总线开发的朋友们一些参考！.31. 本文较为详细的介绍了双CPU的C51系统设计中.32. c51的时钟芯片读写函数.33. 本书介绍了PCI局部总线的基本概念,功能,操作规则和使用方法.34. Intel公司的闪存转换层(Flash Translaion Layer)规范指导文件.35. h.261 player with running h.261,p24,h26 file.36. I2C接口协议.37. First of all we would like to thank God Almighty for giving us the strength and confidence in pursi.38. 2008年最新出版Silverlight及Blend学习电子书教程合集.39. 利用VB與VC程式整合開發實現影像物體分類辨識的PLC輸送帶系統.40. 凌阳公司机sunplus1002在这个芯片下.
标签： 光电子
上传时间： 2013-06-25
上传用户：eeworm
To get started with Code Composer Studio™ (CCStudio) Development Tools, review the first two sections of this book. The remaining sections contain more detailed information on specific processes and tools. To determine whether you can utilize these features, see the online help provided with the Code Composer Studio installation.
上传时间： 2013-07-24
上传用户：zaizaibang
